package cn.tedu.jdbc;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.Scanner;

public class JDBCReg {
    public static void main(String[] args) {
        try(Connection connection = DBUtil.geConnection();) {
            Scanner scanner = new Scanner(System.in);
            System.out.println("用户名:");
            String username = scanner.nextLine();
            System.out.println("密码:");
            String password = scanner.nextLine();
            System.out.println("昵称");
            String nickname = scanner.nextLine();
            System.out.println("年龄");
            Integer age = scanner.nextInt();
            String sql ="SELECT id FROM userinfo WHERE username=?";
            PreparedStatement ps1 = connection.prepareStatement(sql);
            ps1.setString(1,username);
            ResultSet rs1 = ps1.executeQuery();
            if (rs1.next()){
                System.out.println("该用户名被占用");
            }else {
                String sql2 = "INSERT INTO userinfo(username,password,nickname,age) VALUES (?,?,?,?)";
                PreparedStatement ps2 = connection.prepareStatement(sql2);
                ps2.setString(1,username);
                ps2.setString(2,password);
                ps2.setString(3,nickname);
                ps2.setInt(4,age);
                int i = ps2.executeUpdate();
                if (i > 0){
                    System.out.println("恭喜您,注册成功");
                }else {
                    System.out.println("系统繁忙,请稍后再试");
                }
            }
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
    }
}
